Quick Guide
1
Select a language example to explore PDA-CFG equivalence
2
Manually execute PDA transitions and CFG derivations step-by-step
3
Observe how both approaches recognize the same string
4
Validate each step with hints and corrections
Pushdown Automaton (PDA)
Context-Free Grammar (CFG)
Controls:
Change Language
Previous Step
Show Hint
Apply Correct
Reset
Current Language:
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Test String:
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Remaining Input:
""
Stack
Select PDA Transition
PDA Mode
Available Actions:
Make your selection above to proceed with the simulation.
PDA Execution Steps
Grammar Rules
Select CFG Production
CFG Mode
Available Actions:
Make your selection above to proceed with the simulation.
CFG Derivation Steps